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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * drivers/net/ethernet/freescale/gianfar_ethtool.c
4 *
5 * Gianfar Ethernet Driver
6 * Ethtool support for Gianfar Enet
7 * Based on e1000 ethtool support
8 *
9 * Author: Andy Fleming
10 * Maintainer: Kumar Gala
11 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
12 *
13 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
14 */
15
16#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17
18#include <linux/kernel.h>
19#include <linux/string.h>
20#include <linux/errno.h>
21#include <linux/interrupt.h>
22#include <linux/delay.h>
23#include <linux/netdevice.h>
24#include <linux/etherdevice.h>
25#include <linux/net_tstamp.h>
26#include <linux/skbuff.h>
27#include <linux/spinlock.h>
28#include <linux/mm.h>
29
30#include <asm/io.h>
31#include <asm/irq.h>
32#include <linux/uaccess.h>
33#include <linux/module.h>
34#include <linux/crc32.h>
35#include <asm/types.h>
36#include <linux/ethtool.h>
37#include <linux/mii.h>
38#include <linux/phy.h>
39#include <linux/sort.h>
40#include <linux/if_vlan.h>
41#include <linux/of.h>
42#include <linux/of_platform.h>
43#include <linux/platform_device.h>
44#include <linux/fsl/ptp_qoriq.h>
45
46#include "gianfar.h"
47
48#define GFAR_MAX_COAL_USECS 0xffff
49#define GFAR_MAX_COAL_FRAMES 0xff
50
51static const char stat_gstrings[][ETH_GSTRING_LEN] = {
52 /* extra stats */
53 "rx-allocation-errors",
54 "rx-large-frame-errors",
55 "rx-short-frame-errors",
56 "rx-non-octet-errors",
57 "rx-crc-errors",
58 "rx-overrun-errors",
59 "rx-busy-errors",
60 "rx-babbling-errors",
61 "rx-truncated-frames",
62 "ethernet-bus-error",
63 "tx-babbling-errors",
64 "tx-underrun-errors",
65 "tx-timeout-errors",
66 /* rmon stats */
67 "tx-rx-64-frames",
68 "tx-rx-65-127-frames",
69 "tx-rx-128-255-frames",
70 "tx-rx-256-511-frames",
71 "tx-rx-512-1023-frames",
72 "tx-rx-1024-1518-frames",
73 "tx-rx-1519-1522-good-vlan",
74 "rx-bytes",
75 "rx-packets",
76 "rx-fcs-errors",
77 "receive-multicast-packet",
78 "receive-broadcast-packet",
79 "rx-control-frame-packets",
80 "rx-pause-frame-packets",
81 "rx-unknown-op-code",
82 "rx-alignment-error",
83 "rx-frame-length-error",
84 "rx-code-error",
85 "rx-carrier-sense-error",
86 "rx-undersize-packets",
87 "rx-oversize-packets",
88 "rx-fragmented-frames",
89 "rx-jabber-frames",
90 "rx-dropped-frames",
91 "tx-byte-counter",
92 "tx-packets",
93 "tx-multicast-packets",
94 "tx-broadcast-packets",
95 "tx-pause-control-frames",
96 "tx-deferral-packets",
97 "tx-excessive-deferral-packets",
98 "tx-single-collision-packets",
99 "tx-multiple-collision-packets",
100 "tx-late-collision-packets",
101 "tx-excessive-collision-packets",
102 "tx-total-collision",
103 "reserved",
104 "tx-dropped-frames",
105 "tx-jabber-frames",
106 "tx-fcs-errors",
107 "tx-control-frames",
108 "tx-oversize-frames",
109 "tx-undersize-frames",
110 "tx-fragmented-frames",
111};
112
113/* Fill in a buffer with the strings which correspond to the
114 * stats */
115static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
116{
117 struct gfar_private *priv = netdev_priv(dev);
118
119 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
120 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
121 else
122 memcpy(buf, stat_gstrings,
123 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
124}
125
126/* Fill in an array of 64-bit statistics from various sources.
127 * This array will be appended to the end of the ethtool_stats
128 * structure, and returned to user space
129 */
130static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
131 u64 *buf)
132{
133 int i;
134 struct gfar_private *priv = netdev_priv(dev);
135 struct gfar __iomem *regs = priv->gfargrp[0].regs;
136 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
137
138 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
139 buf[i] = atomic64_read(&extra[i]);
140
141 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
142 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
143
144 for (; i < GFAR_STATS_LEN; i++, rmon++)
145 buf[i] = (u64) gfar_read(rmon);
146 }
147}
148
149static int gfar_sset_count(struct net_device *dev, int sset)
150{
151 struct gfar_private *priv = netdev_priv(dev);
152
153 switch (sset) {
154 case ETH_SS_STATS:
155 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
156 return GFAR_STATS_LEN;
157 else
158 return GFAR_EXTRA_STATS_LEN;
159 default:
160 return -EOPNOTSUPP;
161 }
162}
163
164/* Fills in the drvinfo structure with some basic info */
165static void gfar_gdrvinfo(struct net_device *dev,
166 struct ethtool_drvinfo *drvinfo)
167{
168 strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
169}
170
171/* Return the length of the register structure */
172static int gfar_reglen(struct net_device *dev)
173{
174 return sizeof (struct gfar);
175}
176
177/* Return a dump of the GFAR register space */
178static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
179 void *regbuf)
180{
181 int i;
182 struct gfar_private *priv = netdev_priv(dev);
183 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
184 u32 *buf = (u32 *) regbuf;
185
186 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
187 buf[i] = gfar_read(&theregs[i]);
188}
189
190/* Convert microseconds to ethernet clock ticks, which changes
191 * depending on what speed the controller is running at */
192static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
193 unsigned int usecs)
194{
195 struct net_device *ndev = priv->ndev;
196 struct phy_device *phydev = ndev->phydev;
197 unsigned int count;
198
199 /* The timer is different, depending on the interface speed */
200 switch (phydev->speed) {
201 case SPEED_1000:
202 count = GFAR_GBIT_TIME;
203 break;
204 case SPEED_100:
205 count = GFAR_100_TIME;
206 break;
207 case SPEED_10:
208 default:
209 count = GFAR_10_TIME;
210 break;
211 }
212
213 /* Make sure we return a number greater than 0
214 * if usecs > 0 */
215 return DIV_ROUND_UP(usecs * 1000, count);
216}
217
218/* Convert ethernet clock ticks to microseconds */
219static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
220 unsigned int ticks)
221{
222 struct net_device *ndev = priv->ndev;
223 struct phy_device *phydev = ndev->phydev;
224 unsigned int count;
225
226 /* The timer is different, depending on the interface speed */
227 switch (phydev->speed) {
228 case SPEED_1000:
229 count = GFAR_GBIT_TIME;
230 break;
231 case SPEED_100:
232 count = GFAR_100_TIME;
233 break;
234 case SPEED_10:
235 default:
236 count = GFAR_10_TIME;
237 break;
238 }
239
240 /* Make sure we return a number greater than 0 */
241 /* if ticks is > 0 */
242 return (ticks * count) / 1000;
243}
244
245/* Get the coalescing parameters, and put them in the cvals
246 * structure. */
247static int gfar_gcoalesce(struct net_device *dev,
248 struct ethtool_coalesce *cvals,
249 struct kernel_ethtool_coalesce *kernel_coal,
250 struct netlink_ext_ack *extack)
251{
252 struct gfar_private *priv = netdev_priv(dev);
253 struct gfar_priv_rx_q *rx_queue = NULL;
254 struct gfar_priv_tx_q *tx_queue = NULL;
255 unsigned long rxtime;
256 unsigned long rxcount;
257 unsigned long txtime;
258 unsigned long txcount;
259
260 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
261 return -EOPNOTSUPP;
262
263 if (!dev->phydev)
264 return -ENODEV;
265
266 rx_queue = priv->rx_queue[0];
267 tx_queue = priv->tx_queue[0];
268
269 rxtime = get_ictt_value(rx_queue->rxic);
270 rxcount = get_icft_value(rx_queue->rxic);
271 txtime = get_ictt_value(tx_queue->txic);
272 txcount = get_icft_value(tx_queue->txic);
273 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
274 cvals->rx_max_coalesced_frames = rxcount;
275
276 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
277 cvals->tx_max_coalesced_frames = txcount;
278
279 return 0;
280}
281
282/* Change the coalescing values.
283 * Both cvals->*_usecs and cvals->*_frames have to be > 0
284 * in order for coalescing to be active
285 */
286static int gfar_scoalesce(struct net_device *dev,
287 struct ethtool_coalesce *cvals,
288 struct kernel_ethtool_coalesce *kernel_coal,
289 struct netlink_ext_ack *extack)
290{
291 struct gfar_private *priv = netdev_priv(dev);
292 int i, err = 0;
293
294 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
295 return -EOPNOTSUPP;
296
297 if (!dev->phydev)
298 return -ENODEV;
299
300 /* Check the bounds of the values */
301 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
302 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
303 GFAR_MAX_COAL_USECS);
304 return -EINVAL;
305 }
306
307 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
308 netdev_info(dev, "Coalescing is limited to %d frames\n",
309 GFAR_MAX_COAL_FRAMES);
310 return -EINVAL;
311 }
312
313 /* Check the bounds of the values */
314 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
315 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
316 GFAR_MAX_COAL_USECS);
317 return -EINVAL;
318 }
319
320 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
321 netdev_info(dev, "Coalescing is limited to %d frames\n",
322 GFAR_MAX_COAL_FRAMES);
323 return -EINVAL;
324 }
325
326 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
327 cpu_relax();
328
329 /* Set up rx coalescing */
330 if ((cvals->rx_coalesce_usecs == 0) ||
331 (cvals->rx_max_coalesced_frames == 0)) {
332 for (i = 0; i < priv->num_rx_queues; i++)
333 priv->rx_queue[i]->rxcoalescing = 0;
334 } else {
335 for (i = 0; i < priv->num_rx_queues; i++)
336 priv->rx_queue[i]->rxcoalescing = 1;
337 }
338
339 for (i = 0; i < priv->num_rx_queues; i++) {
340 priv->rx_queue[i]->rxic = mk_ic_value(
341 cvals->rx_max_coalesced_frames,
342 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
343 }
344
345 /* Set up tx coalescing */
346 if ((cvals->tx_coalesce_usecs == 0) ||
347 (cvals->tx_max_coalesced_frames == 0)) {
348 for (i = 0; i < priv->num_tx_queues; i++)
349 priv->tx_queue[i]->txcoalescing = 0;
350 } else {
351 for (i = 0; i < priv->num_tx_queues; i++)
352 priv->tx_queue[i]->txcoalescing = 1;
353 }
354
355 for (i = 0; i < priv->num_tx_queues; i++) {
356 priv->tx_queue[i]->txic = mk_ic_value(
357 cvals->tx_max_coalesced_frames,
358 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
359 }
360
361 if (dev->flags & IFF_UP) {
362 stop_gfar(dev);
363 err = startup_gfar(dev);
364 } else {
365 gfar_mac_reset(priv);
366 }
367
368 clear_bit_unlock(GFAR_RESETTING, &priv->state);
369
370 return err;
371}
372
373/* Fills in rvals with the current ring parameters. Currently,
374 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
375 * jumbo are ignored by the driver */
376static void gfar_gringparam(struct net_device *dev,
377 struct ethtool_ringparam *rvals,
378 struct kernel_ethtool_ringparam *kernel_rvals,
379 struct netlink_ext_ack *extack)
380{
381 struct gfar_private *priv = netdev_priv(dev);
382 struct gfar_priv_tx_q *tx_queue = NULL;
383 struct gfar_priv_rx_q *rx_queue = NULL;
384
385 tx_queue = priv->tx_queue[0];
386 rx_queue = priv->rx_queue[0];
387
388 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
389 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
390 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
391 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
392
393 /* Values changeable by the user. The valid values are
394 * in the range 1 to the "*_max_pending" counterpart above.
395 */
396 rvals->rx_pending = rx_queue->rx_ring_size;
397 rvals->rx_mini_pending = rx_queue->rx_ring_size;
398 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
399 rvals->tx_pending = tx_queue->tx_ring_size;
400}
401
402/* Change the current ring parameters, stopping the controller if
403 * necessary so that we don't mess things up while we're in motion.
404 */
405static int gfar_sringparam(struct net_device *dev,
406 struct ethtool_ringparam *rvals,
407 struct kernel_ethtool_ringparam *kernel_rvals,
408 struct netlink_ext_ack *extack)
409{
410 struct gfar_private *priv = netdev_priv(dev);
411 int err = 0, i;
412
413 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
414 return -EINVAL;
415
416 if (!is_power_of_2(rvals->rx_pending)) {
417 netdev_err(dev, "Ring sizes must be a power of 2\n");
418 return -EINVAL;
419 }
420
421 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
422 return -EINVAL;
423
424 if (!is_power_of_2(rvals->tx_pending)) {
425 netdev_err(dev, "Ring sizes must be a power of 2\n");
426 return -EINVAL;
427 }
428
429 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
430 cpu_relax();
431
432 if (dev->flags & IFF_UP)
433 stop_gfar(dev);
434
435 /* Change the sizes */
436 for (i = 0; i < priv->num_rx_queues; i++)
437 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
438
439 for (i = 0; i < priv->num_tx_queues; i++)
440 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
441
442 /* Rebuild the rings with the new size */
443 if (dev->flags & IFF_UP)
444 err = startup_gfar(dev);
445
446 clear_bit_unlock(GFAR_RESETTING, &priv->state);
447
448 return err;
449}
450
451static void gfar_gpauseparam(struct net_device *dev,
452 struct ethtool_pauseparam *epause)
453{
454 struct gfar_private *priv = netdev_priv(dev);
455
456 epause->autoneg = !!priv->pause_aneg_en;
457 epause->rx_pause = !!priv->rx_pause_en;
458 epause->tx_pause = !!priv->tx_pause_en;
459}
460
461static int gfar_spauseparam(struct net_device *dev,
462 struct ethtool_pauseparam *epause)
463{
464 struct gfar_private *priv = netdev_priv(dev);
465 struct phy_device *phydev = dev->phydev;
466 struct gfar __iomem *regs = priv->gfargrp[0].regs;
467
468 if (!phydev)
469 return -ENODEV;
470
471 if (!phy_validate_pause(phydev, epause))
472 return -EINVAL;
473
474 priv->rx_pause_en = priv->tx_pause_en = 0;
475 phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
476 if (epause->rx_pause) {
477 priv->rx_pause_en = 1;
478
479 if (epause->tx_pause) {
480 priv->tx_pause_en = 1;
481 }
482 } else if (epause->tx_pause) {
483 priv->tx_pause_en = 1;
484 }
485
486 if (epause->autoneg)
487 priv->pause_aneg_en = 1;
488 else
489 priv->pause_aneg_en = 0;
490
491 if (!epause->autoneg) {
492 u32 tempval = gfar_read(®s->maccfg1);
493
494 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
495
496 priv->tx_actual_en = 0;
497 if (priv->tx_pause_en) {
498 priv->tx_actual_en = 1;
499 tempval |= MACCFG1_TX_FLOW;
500 }
501
502 if (priv->rx_pause_en)
503 tempval |= MACCFG1_RX_FLOW;
504 gfar_write(®s->maccfg1, tempval);
505 }
506
507 return 0;
508}
509
510int gfar_set_features(struct net_device *dev, netdev_features_t features)
511{
512 netdev_features_t changed = dev->features ^ features;
513 struct gfar_private *priv = netdev_priv(dev);
514 int err = 0;
515
516 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
517 NETIF_F_RXCSUM)))
518 return 0;
519
520 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
521 cpu_relax();
522
523 dev->features = features;
524
525 if (dev->flags & IFF_UP) {
526 /* Now we take down the rings to rebuild them */
527 stop_gfar(dev);
528 err = startup_gfar(dev);
529 } else {
530 gfar_mac_reset(priv);
531 }
532
533 clear_bit_unlock(GFAR_RESETTING, &priv->state);
534
535 return err;
536}
537
538static uint32_t gfar_get_msglevel(struct net_device *dev)
539{
540 struct gfar_private *priv = netdev_priv(dev);
541
542 return priv->msg_enable;
543}
544
545static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
546{
547 struct gfar_private *priv = netdev_priv(dev);
548
549 priv->msg_enable = data;
550}
551
552#ifdef CONFIG_PM
553static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
554{
555 struct gfar_private *priv = netdev_priv(dev);
556
557 wol->supported = 0;
558 wol->wolopts = 0;
559
560 if (priv->wol_supported & GFAR_WOL_MAGIC)
561 wol->supported |= WAKE_MAGIC;
562
563 if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
564 wol->supported |= WAKE_UCAST;
565
566 if (priv->wol_opts & GFAR_WOL_MAGIC)
567 wol->wolopts |= WAKE_MAGIC;
568
569 if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
570 wol->wolopts |= WAKE_UCAST;
571}
572
573static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
574{
575 struct gfar_private *priv = netdev_priv(dev);
576 u16 wol_opts = 0;
577 int err;
578
579 if (!priv->wol_supported && wol->wolopts)
580 return -EINVAL;
581
582 if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
583 return -EINVAL;
584
585 if (wol->wolopts & WAKE_MAGIC) {
586 wol_opts |= GFAR_WOL_MAGIC;
587 } else {
588 if (wol->wolopts & WAKE_UCAST)
589 wol_opts |= GFAR_WOL_FILER_UCAST;
590 }
591
592 wol_opts &= priv->wol_supported;
593 priv->wol_opts = 0;
594
595 err = device_set_wakeup_enable(priv->dev, wol_opts);
596 if (err)
597 return err;
598
599 priv->wol_opts = wol_opts;
600
601 return 0;
602}
603#endif
604
605static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
606{
607 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
608
609 if (ethflow & RXH_L2DA) {
610 fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
611 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
612 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
613 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
614 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
615 priv->cur_filer_idx = priv->cur_filer_idx - 1;
616
617 fcr = RQFCR_PID_DAL | RQFCR_CMP_NOMATCH |
618 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
619 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
620 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
621 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
622 priv->cur_filer_idx = priv->cur_filer_idx - 1;
623 }
624
625 if (ethflow & RXH_VLAN) {
626 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
627 RQFCR_AND | RQFCR_HASHTBL_0;
628 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
629 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
630 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
631 priv->cur_filer_idx = priv->cur_filer_idx - 1;
632 }
633
634 if (ethflow & RXH_IP_SRC) {
635 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
636 RQFCR_AND | RQFCR_HASHTBL_0;
637 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
638 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
639 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
640 priv->cur_filer_idx = priv->cur_filer_idx - 1;
641 }
642
643 if (ethflow & (RXH_IP_DST)) {
644 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
645 RQFCR_AND | RQFCR_HASHTBL_0;
646 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
647 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
648 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
649 priv->cur_filer_idx = priv->cur_filer_idx - 1;
650 }
651
652 if (ethflow & RXH_L3_PROTO) {
653 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
654 RQFCR_AND | RQFCR_HASHTBL_0;
655 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
656 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
657 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
658 priv->cur_filer_idx = priv->cur_filer_idx - 1;
659 }
660
661 if (ethflow & RXH_L4_B_0_1) {
662 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
663 RQFCR_AND | RQFCR_HASHTBL_0;
664 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
665 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
666 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
667 priv->cur_filer_idx = priv->cur_filer_idx - 1;
668 }
669
670 if (ethflow & RXH_L4_B_2_3) {
671 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
672 RQFCR_AND | RQFCR_HASHTBL_0;
673 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
674 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
675 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
676 priv->cur_filer_idx = priv->cur_filer_idx - 1;
677 }
678}
679
680static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
681 u64 class)
682{
683 unsigned int cmp_rqfpr;
684 unsigned int *local_rqfpr;
685 unsigned int *local_rqfcr;
686 int i = 0x0, k = 0x0;
687 int j = MAX_FILER_IDX, l = 0x0;
688 int ret = 1;
689
690 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
691 GFP_KERNEL);
692 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
693 GFP_KERNEL);
694 if (!local_rqfpr || !local_rqfcr) {
695 ret = 0;
696 goto err;
697 }
698
699 switch (class) {
700 case TCP_V4_FLOW:
701 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
702 break;
703 case UDP_V4_FLOW:
704 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
705 break;
706 case TCP_V6_FLOW:
707 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
708 break;
709 case UDP_V6_FLOW:
710 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
711 break;
712 default:
713 netdev_err(priv->ndev,
714 "Right now this class is not supported\n");
715 ret = 0;
716 goto err;
717 }
718
719 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
720 local_rqfpr[j] = priv->ftp_rqfpr[i];
721 local_rqfcr[j] = priv->ftp_rqfcr[i];
722 j--;
723 if ((priv->ftp_rqfcr[i] ==
724 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
725 (priv->ftp_rqfpr[i] == cmp_rqfpr))
726 break;
727 }
728
729 if (i == MAX_FILER_IDX + 1) {
730 netdev_err(priv->ndev,
731 "No parse rule found, can't create hash rules\n");
732 ret = 0;
733 goto err;
734 }
735
736 /* If a match was found, then it begins the starting of a cluster rule
737 * if it was already programmed, we need to overwrite these rules
738 */
739 for (l = i+1; l < MAX_FILER_IDX; l++) {
740 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
741 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
742 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
743 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
744 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
745 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
746 priv->ftp_rqfpr[l]);
747 break;
748 }
749
750 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
751 (priv->ftp_rqfcr[l] & RQFCR_AND))
752 continue;
753 else {
754 local_rqfpr[j] = priv->ftp_rqfpr[l];
755 local_rqfcr[j] = priv->ftp_rqfcr[l];
756 j--;
757 }
758 }
759
760 priv->cur_filer_idx = l - 1;
761
762 /* hash rules */
763 ethflow_to_filer_rules(priv, ethflow);
764
765 /* Write back the popped out rules again */
766 for (k = j+1; k < MAX_FILER_IDX; k++) {
767 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
768 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
769 gfar_write_filer(priv, priv->cur_filer_idx,
770 local_rqfcr[k], local_rqfpr[k]);
771 if (!priv->cur_filer_idx)
772 break;
773 priv->cur_filer_idx = priv->cur_filer_idx - 1;
774 }
775
776err:
777 kfree(local_rqfcr);
778 kfree(local_rqfpr);
779 return ret;
780}
781
782static int gfar_set_hash_opts(struct gfar_private *priv,
783 struct ethtool_rxnfc *cmd)
784{
785 /* write the filer rules here */
786 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
787 return -EINVAL;
788
789 return 0;
790}
791
792static int gfar_check_filer_hardware(struct gfar_private *priv)
793{
794 struct gfar __iomem *regs = priv->gfargrp[0].regs;
795 u32 i;
796
797 /* Check if we are in FIFO mode */
798 i = gfar_read(®s->ecntrl);
799 i &= ECNTRL_FIFM;
800 if (i == ECNTRL_FIFM) {
801 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
802 i = gfar_read(®s->rctrl);
803 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
804 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
805 netdev_info(priv->ndev,
806 "Receive Queue Filtering enabled\n");
807 } else {
808 netdev_warn(priv->ndev,
809 "Receive Queue Filtering disabled\n");
810 return -EOPNOTSUPP;
811 }
812 }
813 /* Or in standard mode */
814 else {
815 i = gfar_read(®s->rctrl);
816 i &= RCTRL_PRSDEP_MASK;
817 if (i == RCTRL_PRSDEP_MASK) {
818 netdev_info(priv->ndev,
819 "Receive Queue Filtering enabled\n");
820 } else {
821 netdev_warn(priv->ndev,
822 "Receive Queue Filtering disabled\n");
823 return -EOPNOTSUPP;
824 }
825 }
826
827 /* Sets the properties for arbitrary filer rule
828 * to the first 4 Layer 4 Bytes
829 */
830 gfar_write(®s->rbifx, 0xC0C1C2C3);
831 return 0;
832}
833
834/* Write a mask to filer cache */
835static void gfar_set_mask(u32 mask, struct filer_table *tab)
836{
837 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
838 tab->fe[tab->index].prop = mask;
839 tab->index++;
840}
841
842/* Sets parse bits (e.g. IP or TCP) */
843static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
844{
845 gfar_set_mask(mask, tab);
846 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
847 RQFCR_AND;
848 tab->fe[tab->index].prop = value;
849 tab->index++;
850}
851
852static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
853 struct filer_table *tab)
854{
855 gfar_set_mask(mask, tab);
856 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
857 tab->fe[tab->index].prop = value;
858 tab->index++;
859}
860
861/* For setting a tuple of value and mask of type flag
862 * Example:
863 * IP-Src = 10.0.0.0/255.0.0.0
864 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
865 *
866 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
867 * For a don't care mask it gives us a 0
868 *
869 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
870 * and MAC stuff on an upper level (due to missing information on this level).
871 * For these guys we can discard them if they are value=0 and mask=0.
872 *
873 * Further the all masks are one-padded for better hardware efficiency.
874 */
875static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
876 struct filer_table *tab)
877{
878 switch (flag) {
879 /* 3bit */
880 case RQFCR_PID_PRI:
881 if (!(value | mask))
882 return;
883 mask |= RQFCR_PID_PRI_MASK;
884 break;
885 /* 8bit */
886 case RQFCR_PID_L4P:
887 case RQFCR_PID_TOS:
888 if (!~(mask | RQFCR_PID_L4P_MASK))
889 return;
890 if (!mask)
891 mask = ~0;
892 else
893 mask |= RQFCR_PID_L4P_MASK;
894 break;
895 /* 12bit */
896 case RQFCR_PID_VID:
897 if (!(value | mask))
898 return;
899 mask |= RQFCR_PID_VID_MASK;
900 break;
901 /* 16bit */
902 case RQFCR_PID_DPT:
903 case RQFCR_PID_SPT:
904 case RQFCR_PID_ETY:
905 if (!~(mask | RQFCR_PID_PORT_MASK))
906 return;
907 if (!mask)
908 mask = ~0;
909 else
910 mask |= RQFCR_PID_PORT_MASK;
911 break;
912 /* 24bit */
913 case RQFCR_PID_DAH:
914 case RQFCR_PID_DAL:
915 case RQFCR_PID_SAH:
916 case RQFCR_PID_SAL:
917 if (!(value | mask))
918 return;
919 mask |= RQFCR_PID_MAC_MASK;
920 break;
921 /* for all real 32bit masks */
922 default:
923 if (!~mask)
924 return;
925 if (!mask)
926 mask = ~0;
927 break;
928 }
929 gfar_set_general_attribute(value, mask, flag, tab);
930}
931
932/* Translates value and mask for UDP, TCP or SCTP */
933static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
934 struct ethtool_tcpip4_spec *mask,
935 struct filer_table *tab)
936{
937 gfar_set_attribute(be32_to_cpu(value->ip4src),
938 be32_to_cpu(mask->ip4src),
939 RQFCR_PID_SIA, tab);
940 gfar_set_attribute(be32_to_cpu(value->ip4dst),
941 be32_to_cpu(mask->ip4dst),
942 RQFCR_PID_DIA, tab);
943 gfar_set_attribute(be16_to_cpu(value->pdst),
944 be16_to_cpu(mask->pdst),
945 RQFCR_PID_DPT, tab);
946 gfar_set_attribute(be16_to_cpu(value->psrc),
947 be16_to_cpu(mask->psrc),
948 RQFCR_PID_SPT, tab);
949 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
950}
951
952/* Translates value and mask for RAW-IP4 */
953static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
954 struct ethtool_usrip4_spec *mask,
955 struct filer_table *tab)
956{
957 gfar_set_attribute(be32_to_cpu(value->ip4src),
958 be32_to_cpu(mask->ip4src),
959 RQFCR_PID_SIA, tab);
960 gfar_set_attribute(be32_to_cpu(value->ip4dst),
961 be32_to_cpu(mask->ip4dst),
962 RQFCR_PID_DIA, tab);
963 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
964 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
965 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
966 be32_to_cpu(mask->l4_4_bytes),
967 RQFCR_PID_ARB, tab);
968
969}
970
971/* Translates value and mask for ETHER spec */
972static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
973 struct filer_table *tab)
974{
975 u32 upper_temp_mask = 0;
976 u32 lower_temp_mask = 0;
977
978 /* Source address */
979 if (!is_broadcast_ether_addr(mask->h_source)) {
980 if (is_zero_ether_addr(mask->h_source)) {
981 upper_temp_mask = 0xFFFFFFFF;
982 lower_temp_mask = 0xFFFFFFFF;
983 } else {
984 upper_temp_mask = mask->h_source[0] << 16 |
985 mask->h_source[1] << 8 |
986 mask->h_source[2];
987 lower_temp_mask = mask->h_source[3] << 16 |
988 mask->h_source[4] << 8 |
989 mask->h_source[5];
990 }
991 /* Upper 24bit */
992 gfar_set_attribute(value->h_source[0] << 16 |
993 value->h_source[1] << 8 |
994 value->h_source[2],
995 upper_temp_mask, RQFCR_PID_SAH, tab);
996 /* And the same for the lower part */
997 gfar_set_attribute(value->h_source[3] << 16 |
998 value->h_source[4] << 8 |
999 value->h_source[5],
1000 lower_temp_mask, RQFCR_PID_SAL, tab);
1001 }
1002 /* Destination address */
1003 if (!is_broadcast_ether_addr(mask->h_dest)) {
1004 /* Special for destination is limited broadcast */
1005 if ((is_broadcast_ether_addr(value->h_dest) &&
1006 is_zero_ether_addr(mask->h_dest))) {
1007 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1008 } else {
1009 if (is_zero_ether_addr(mask->h_dest)) {
1010 upper_temp_mask = 0xFFFFFFFF;
1011 lower_temp_mask = 0xFFFFFFFF;
1012 } else {
1013 upper_temp_mask = mask->h_dest[0] << 16 |
1014 mask->h_dest[1] << 8 |
1015 mask->h_dest[2];
1016 lower_temp_mask = mask->h_dest[3] << 16 |
1017 mask->h_dest[4] << 8 |
1018 mask->h_dest[5];
1019 }
1020
1021 /* Upper 24bit */
1022 gfar_set_attribute(value->h_dest[0] << 16 |
1023 value->h_dest[1] << 8 |
1024 value->h_dest[2],
1025 upper_temp_mask, RQFCR_PID_DAH, tab);
1026 /* And the same for the lower part */
1027 gfar_set_attribute(value->h_dest[3] << 16 |
1028 value->h_dest[4] << 8 |
1029 value->h_dest[5],
1030 lower_temp_mask, RQFCR_PID_DAL, tab);
1031 }
1032 }
1033
1034 gfar_set_attribute(be16_to_cpu(value->h_proto),
1035 be16_to_cpu(mask->h_proto),
1036 RQFCR_PID_ETY, tab);
1037}
1038
1039static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1040{
1041 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1042}
1043
1044static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1045{
1046 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1047}
1048
1049static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1050{
1051 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1052}
1053
1054static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1055{
1056 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1057}
1058
1059static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1060{
1061 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1062 VLAN_PRIO_SHIFT;
1063}
1064
1065static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1066{
1067 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1068 VLAN_PRIO_SHIFT;
1069}
1070
1071/* Convert a rule to binary filter format of gianfar */
1072static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1073 struct filer_table *tab)
1074{
1075 u32 vlan = 0, vlan_mask = 0;
1076 u32 id = 0, id_mask = 0;
1077 u32 cfi = 0, cfi_mask = 0;
1078 u32 prio = 0, prio_mask = 0;
1079 u32 old_index = tab->index;
1080
1081 /* Check if vlan is wanted */
1082 if ((rule->flow_type & FLOW_EXT) &&
1083 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1084 if (!rule->m_ext.vlan_tci)
1085 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1086
1087 vlan = RQFPR_VLN;
1088 vlan_mask = RQFPR_VLN;
1089
1090 /* Separate the fields */
1091 id = vlan_tci_vid(rule);
1092 id_mask = vlan_tci_vidm(rule);
1093 cfi = vlan_tci_cfi(rule);
1094 cfi_mask = vlan_tci_cfim(rule);
1095 prio = vlan_tci_prio(rule);
1096 prio_mask = vlan_tci_priom(rule);
1097
1098 if (cfi_mask) {
1099 if (cfi)
1100 vlan |= RQFPR_CFI;
1101 vlan_mask |= RQFPR_CFI;
1102 }
1103 }
1104
1105 switch (rule->flow_type & ~FLOW_EXT) {
1106 case TCP_V4_FLOW:
1107 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1108 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1109 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1110 &rule->m_u.tcp_ip4_spec, tab);
1111 break;
1112 case UDP_V4_FLOW:
1113 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1114 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1115 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1116 &rule->m_u.udp_ip4_spec, tab);
1117 break;
1118 case SCTP_V4_FLOW:
1119 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1120 tab);
1121 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1122 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1123 (struct ethtool_tcpip4_spec *)&rule->m_u,
1124 tab);
1125 break;
1126 case IP_USER_FLOW:
1127 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1128 tab);
1129 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1130 (struct ethtool_usrip4_spec *) &rule->m_u,
1131 tab);
1132 break;
1133 case ETHER_FLOW:
1134 if (vlan)
1135 gfar_set_parse_bits(vlan, vlan_mask, tab);
1136 gfar_set_ether((struct ethhdr *) &rule->h_u,
1137 (struct ethhdr *) &rule->m_u, tab);
1138 break;
1139 default:
1140 return -1;
1141 }
1142
1143 /* Set the vlan attributes in the end */
1144 if (vlan) {
1145 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1146 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1147 }
1148
1149 /* If there has been nothing written till now, it must be a default */
1150 if (tab->index == old_index) {
1151 gfar_set_mask(0xFFFFFFFF, tab);
1152 tab->fe[tab->index].ctrl = 0x20;
1153 tab->fe[tab->index].prop = 0x0;
1154 tab->index++;
1155 }
1156
1157 /* Remove last AND */
1158 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1159
1160 /* Specify which queue to use or to drop */
1161 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1162 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1163 else
1164 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1165
1166 /* Only big enough entries can be clustered */
1167 if (tab->index > (old_index + 2)) {
1168 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1169 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1170 }
1171
1172 /* In rare cases the cache can be full while there is
1173 * free space in hw
1174 */
1175 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1176 return -EBUSY;
1177
1178 return 0;
1179}
1180
1181/* Write the bit-pattern from software's buffer to hardware registers */
1182static int gfar_write_filer_table(struct gfar_private *priv,
1183 struct filer_table *tab)
1184{
1185 u32 i = 0;
1186 if (tab->index > MAX_FILER_IDX - 1)
1187 return -EBUSY;
1188
1189 /* Fill regular entries */
1190 for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1191 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1192 /* Fill the rest with fall-troughs */
1193 for (; i < MAX_FILER_IDX; i++)
1194 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1195 /* Last entry must be default accept
1196 * because that's what people expect
1197 */
1198 gfar_write_filer(priv, i, 0x20, 0x0);
1199
1200 return 0;
1201}
1202
1203static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1204 struct gfar_private *priv)
1205{
1206
1207 if (flow->flow_type & FLOW_EXT) {
1208 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1209 netdev_warn(priv->ndev,
1210 "User-specific data not supported!\n");
1211 if (~flow->m_ext.vlan_etype)
1212 netdev_warn(priv->ndev,
1213 "VLAN-etype not supported!\n");
1214 }
1215 if (flow->flow_type == IP_USER_FLOW)
1216 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1217 netdev_warn(priv->ndev,
1218 "IP-Version differing from IPv4 not supported!\n");
1219
1220 return 0;
1221}
1222
1223static int gfar_process_filer_changes(struct gfar_private *priv)
1224{
1225 struct ethtool_flow_spec_container *j;
1226 struct filer_table *tab;
1227 s32 ret = 0;
1228
1229 /* So index is set to zero, too! */
1230 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1231 if (tab == NULL)
1232 return -ENOMEM;
1233
1234 /* Now convert the existing filer data from flow_spec into
1235 * filer tables binary format
1236 */
1237 list_for_each_entry(j, &priv->rx_list.list, list) {
1238 ret = gfar_convert_to_filer(&j->fs, tab);
1239 if (ret == -EBUSY) {
1240 netdev_err(priv->ndev,
1241 "Rule not added: No free space!\n");
1242 goto end;
1243 }
1244 if (ret == -1) {
1245 netdev_err(priv->ndev,
1246 "Rule not added: Unsupported Flow-type!\n");
1247 goto end;
1248 }
1249 }
1250
1251 /* Write everything to hardware */
1252 ret = gfar_write_filer_table(priv, tab);
1253 if (ret == -EBUSY) {
1254 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1255 goto end;
1256 }
1257
1258end:
1259 kfree(tab);
1260 return ret;
1261}
1262
1263static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1264{
1265 u32 i = 0;
1266
1267 for (i = 0; i < sizeof(flow->m_u); i++)
1268 flow->m_u.hdata[i] ^= 0xFF;
1269
1270 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1271 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1272 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1273 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1274}
1275
1276static int gfar_add_cls(struct gfar_private *priv,
1277 struct ethtool_rx_flow_spec *flow)
1278{
1279 struct ethtool_flow_spec_container *temp, *comp;
1280 int ret = 0;
1281
1282 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1283 if (temp == NULL)
1284 return -ENOMEM;
1285 memcpy(&temp->fs, flow, sizeof(temp->fs));
1286
1287 gfar_invert_masks(&temp->fs);
1288 ret = gfar_check_capability(&temp->fs, priv);
1289 if (ret)
1290 goto clean_mem;
1291 /* Link in the new element at the right @location */
1292 if (list_empty(&priv->rx_list.list)) {
1293 ret = gfar_check_filer_hardware(priv);
1294 if (ret != 0)
1295 goto clean_mem;
1296 list_add(&temp->list, &priv->rx_list.list);
1297 goto process;
1298 } else {
1299 list_for_each_entry(comp, &priv->rx_list.list, list) {
1300 if (comp->fs.location > flow->location) {
1301 list_add_tail(&temp->list, &comp->list);
1302 goto process;
1303 }
1304 if (comp->fs.location == flow->location) {
1305 netdev_err(priv->ndev,
1306 "Rule not added: ID %d not free!\n",
1307 flow->location);
1308 ret = -EBUSY;
1309 goto clean_mem;
1310 }
1311 }
1312 list_add_tail(&temp->list, &priv->rx_list.list);
1313 }
1314
1315process:
1316 priv->rx_list.count++;
1317 ret = gfar_process_filer_changes(priv);
1318 if (ret)
1319 goto clean_list;
1320 return ret;
1321
1322clean_list:
1323 priv->rx_list.count--;
1324 list_del(&temp->list);
1325clean_mem:
1326 kfree(temp);
1327 return ret;
1328}
1329
1330static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1331{
1332 struct ethtool_flow_spec_container *comp;
1333 u32 ret = -EINVAL;
1334
1335 if (list_empty(&priv->rx_list.list))
1336 return ret;
1337
1338 list_for_each_entry(comp, &priv->rx_list.list, list) {
1339 if (comp->fs.location == loc) {
1340 list_del(&comp->list);
1341 kfree(comp);
1342 priv->rx_list.count--;
1343 gfar_process_filer_changes(priv);
1344 ret = 0;
1345 break;
1346 }
1347 }
1348
1349 return ret;
1350}
1351
1352static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1353{
1354 struct ethtool_flow_spec_container *comp;
1355 u32 ret = -EINVAL;
1356
1357 list_for_each_entry(comp, &priv->rx_list.list, list) {
1358 if (comp->fs.location == cmd->fs.location) {
1359 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1360 gfar_invert_masks(&cmd->fs);
1361 ret = 0;
1362 break;
1363 }
1364 }
1365
1366 return ret;
1367}
1368
1369static int gfar_get_cls_all(struct gfar_private *priv,
1370 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1371{
1372 struct ethtool_flow_spec_container *comp;
1373 u32 i = 0;
1374
1375 list_for_each_entry(comp, &priv->rx_list.list, list) {
1376 if (i == cmd->rule_cnt)
1377 return -EMSGSIZE;
1378 rule_locs[i] = comp->fs.location;
1379 i++;
1380 }
1381
1382 cmd->data = MAX_FILER_IDX;
1383 cmd->rule_cnt = i;
1384
1385 return 0;
1386}
1387
1388static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1389{
1390 struct gfar_private *priv = netdev_priv(dev);
1391 int ret = 0;
1392
1393 if (test_bit(GFAR_RESETTING, &priv->state))
1394 return -EBUSY;
1395
1396 mutex_lock(&priv->rx_queue_access);
1397
1398 switch (cmd->cmd) {
1399 case ETHTOOL_SRXFH:
1400 ret = gfar_set_hash_opts(priv, cmd);
1401 break;
1402 case ETHTOOL_SRXCLSRLINS:
1403 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1404 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1405 cmd->fs.location >= MAX_FILER_IDX) {
1406 ret = -EINVAL;
1407 break;
1408 }
1409 ret = gfar_add_cls(priv, &cmd->fs);
1410 break;
1411 case ETHTOOL_SRXCLSRLDEL:
1412 ret = gfar_del_cls(priv, cmd->fs.location);
1413 break;
1414 default:
1415 ret = -EINVAL;
1416 }
1417
1418 mutex_unlock(&priv->rx_queue_access);
1419
1420 return ret;
1421}
1422
1423static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1424 u32 *rule_locs)
1425{
1426 struct gfar_private *priv = netdev_priv(dev);
1427 int ret = 0;
1428
1429 switch (cmd->cmd) {
1430 case ETHTOOL_GRXRINGS:
1431 cmd->data = priv->num_rx_queues;
1432 break;
1433 case ETHTOOL_GRXCLSRLCNT:
1434 cmd->rule_cnt = priv->rx_list.count;
1435 break;
1436 case ETHTOOL_GRXCLSRULE:
1437 ret = gfar_get_cls(priv, cmd);
1438 break;
1439 case ETHTOOL_GRXCLSRLALL:
1440 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1441 break;
1442 default:
1443 ret = -EINVAL;
1444 break;
1445 }
1446
1447 return ret;
1448}
1449
1450static int gfar_get_ts_info(struct net_device *dev,
1451 struct ethtool_ts_info *info)
1452{
1453 struct gfar_private *priv = netdev_priv(dev);
1454 struct platform_device *ptp_dev;
1455 struct device_node *ptp_node;
1456 struct ptp_qoriq *ptp = NULL;
1457
1458 info->phc_index = -1;
1459
1460 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1461 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1462 SOF_TIMESTAMPING_TX_SOFTWARE |
1463 SOF_TIMESTAMPING_SOFTWARE;
1464 return 0;
1465 }
1466
1467 ptp_node = of_find_compatible_node(NULL, NULL, "fsl,etsec-ptp");
1468 if (ptp_node) {
1469 ptp_dev = of_find_device_by_node(ptp_node);
1470 of_node_put(ptp_node);
1471 if (ptp_dev)
1472 ptp = platform_get_drvdata(ptp_dev);
1473 }
1474
1475 if (ptp)
1476 info->phc_index = ptp->phc_index;
1477
1478 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1479 SOF_TIMESTAMPING_RX_HARDWARE |
1480 SOF_TIMESTAMPING_RAW_HARDWARE |
1481 SOF_TIMESTAMPING_RX_SOFTWARE |
1482 SOF_TIMESTAMPING_TX_SOFTWARE |
1483 SOF_TIMESTAMPING_SOFTWARE;
1484 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1485 (1 << HWTSTAMP_TX_ON);
1486 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1487 (1 << HWTSTAMP_FILTER_ALL);
1488 return 0;
1489}
1490
1491const struct ethtool_ops gfar_ethtool_ops = {
1492 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1493 ETHTOOL_COALESCE_MAX_FRAMES,
1494 .get_drvinfo = gfar_gdrvinfo,
1495 .get_regs_len = gfar_reglen,
1496 .get_regs = gfar_get_regs,
1497 .get_link = ethtool_op_get_link,
1498 .get_coalesce = gfar_gcoalesce,
1499 .set_coalesce = gfar_scoalesce,
1500 .get_ringparam = gfar_gringparam,
1501 .set_ringparam = gfar_sringparam,
1502 .get_pauseparam = gfar_gpauseparam,
1503 .set_pauseparam = gfar_spauseparam,
1504 .get_strings = gfar_gstrings,
1505 .get_sset_count = gfar_sset_count,
1506 .get_ethtool_stats = gfar_fill_stats,
1507 .get_msglevel = gfar_get_msglevel,
1508 .set_msglevel = gfar_set_msglevel,
1509#ifdef CONFIG_PM
1510 .get_wol = gfar_get_wol,
1511 .set_wol = gfar_set_wol,
1512#endif
1513 .set_rxnfc = gfar_set_nfc,
1514 .get_rxnfc = gfar_get_nfc,
1515 .get_ts_info = gfar_get_ts_info,
1516 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1517 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1518};
1/*
2 * drivers/net/ethernet/freescale/gianfar_ethtool.c
3 *
4 * Gianfar Ethernet Driver
5 * Ethtool support for Gianfar Enet
6 * Based on e1000 ethtool support
7 *
8 * Author: Andy Fleming
9 * Maintainer: Kumar Gala
10 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
11 *
12 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
13 *
14 * This software may be used and distributed according to
15 * the terms of the GNU Public License, Version 2, incorporated herein
16 * by reference.
17 */
18
19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21#include <linux/kernel.h>
22#include <linux/string.h>
23#include <linux/errno.h>
24#include <linux/interrupt.h>
25#include <linux/delay.h>
26#include <linux/netdevice.h>
27#include <linux/etherdevice.h>
28#include <linux/net_tstamp.h>
29#include <linux/skbuff.h>
30#include <linux/spinlock.h>
31#include <linux/mm.h>
32
33#include <asm/io.h>
34#include <asm/irq.h>
35#include <asm/uaccess.h>
36#include <linux/module.h>
37#include <linux/crc32.h>
38#include <asm/types.h>
39#include <linux/ethtool.h>
40#include <linux/mii.h>
41#include <linux/phy.h>
42#include <linux/sort.h>
43#include <linux/if_vlan.h>
44
45#include "gianfar.h"
46
47#define GFAR_MAX_COAL_USECS 0xffff
48#define GFAR_MAX_COAL_FRAMES 0xff
49static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
50 u64 *buf);
51static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
52static int gfar_gcoalesce(struct net_device *dev,
53 struct ethtool_coalesce *cvals);
54static int gfar_scoalesce(struct net_device *dev,
55 struct ethtool_coalesce *cvals);
56static void gfar_gringparam(struct net_device *dev,
57 struct ethtool_ringparam *rvals);
58static int gfar_sringparam(struct net_device *dev,
59 struct ethtool_ringparam *rvals);
60static void gfar_gdrvinfo(struct net_device *dev,
61 struct ethtool_drvinfo *drvinfo);
62
63static const char stat_gstrings[][ETH_GSTRING_LEN] = {
64 "rx-large-frame-errors",
65 "rx-short-frame-errors",
66 "rx-non-octet-errors",
67 "rx-crc-errors",
68 "rx-overrun-errors",
69 "rx-busy-errors",
70 "rx-babbling-errors",
71 "rx-truncated-frames",
72 "ethernet-bus-error",
73 "tx-babbling-errors",
74 "tx-underrun-errors",
75 "rx-skb-missing-errors",
76 "tx-timeout-errors",
77 "tx-rx-64-frames",
78 "tx-rx-65-127-frames",
79 "tx-rx-128-255-frames",
80 "tx-rx-256-511-frames",
81 "tx-rx-512-1023-frames",
82 "tx-rx-1024-1518-frames",
83 "tx-rx-1519-1522-good-vlan",
84 "rx-bytes",
85 "rx-packets",
86 "rx-fcs-errors",
87 "receive-multicast-packet",
88 "receive-broadcast-packet",
89 "rx-control-frame-packets",
90 "rx-pause-frame-packets",
91 "rx-unknown-op-code",
92 "rx-alignment-error",
93 "rx-frame-length-error",
94 "rx-code-error",
95 "rx-carrier-sense-error",
96 "rx-undersize-packets",
97 "rx-oversize-packets",
98 "rx-fragmented-frames",
99 "rx-jabber-frames",
100 "rx-dropped-frames",
101 "tx-byte-counter",
102 "tx-packets",
103 "tx-multicast-packets",
104 "tx-broadcast-packets",
105 "tx-pause-control-frames",
106 "tx-deferral-packets",
107 "tx-excessive-deferral-packets",
108 "tx-single-collision-packets",
109 "tx-multiple-collision-packets",
110 "tx-late-collision-packets",
111 "tx-excessive-collision-packets",
112 "tx-total-collision",
113 "reserved",
114 "tx-dropped-frames",
115 "tx-jabber-frames",
116 "tx-fcs-errors",
117 "tx-control-frames",
118 "tx-oversize-frames",
119 "tx-undersize-frames",
120 "tx-fragmented-frames",
121};
122
123/* Fill in a buffer with the strings which correspond to the
124 * stats */
125static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
126{
127 struct gfar_private *priv = netdev_priv(dev);
128
129 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
130 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
131 else
132 memcpy(buf, stat_gstrings,
133 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
134}
135
136/* Fill in an array of 64-bit statistics from various sources.
137 * This array will be appended to the end of the ethtool_stats
138 * structure, and returned to user space
139 */
140static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
141 u64 *buf)
142{
143 int i;
144 struct gfar_private *priv = netdev_priv(dev);
145 struct gfar __iomem *regs = priv->gfargrp[0].regs;
146 atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
147
148 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
149 buf[i] = atomic64_read(&extra[i]);
150
151 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
152 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
153
154 for (; i < GFAR_STATS_LEN; i++, rmon++)
155 buf[i] = (u64) gfar_read(rmon);
156 }
157}
158
159static int gfar_sset_count(struct net_device *dev, int sset)
160{
161 struct gfar_private *priv = netdev_priv(dev);
162
163 switch (sset) {
164 case ETH_SS_STATS:
165 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
166 return GFAR_STATS_LEN;
167 else
168 return GFAR_EXTRA_STATS_LEN;
169 default:
170 return -EOPNOTSUPP;
171 }
172}
173
174/* Fills in the drvinfo structure with some basic info */
175static void gfar_gdrvinfo(struct net_device *dev,
176 struct ethtool_drvinfo *drvinfo)
177{
178 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
179 strlcpy(drvinfo->version, gfar_driver_version,
180 sizeof(drvinfo->version));
181 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
182 strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
183 drvinfo->regdump_len = 0;
184 drvinfo->eedump_len = 0;
185}
186
187
188static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
189{
190 struct gfar_private *priv = netdev_priv(dev);
191 struct phy_device *phydev = priv->phydev;
192
193 if (NULL == phydev)
194 return -ENODEV;
195
196 return phy_ethtool_sset(phydev, cmd);
197}
198
199
200/* Return the current settings in the ethtool_cmd structure */
201static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
202{
203 struct gfar_private *priv = netdev_priv(dev);
204 struct phy_device *phydev = priv->phydev;
205 struct gfar_priv_rx_q *rx_queue = NULL;
206 struct gfar_priv_tx_q *tx_queue = NULL;
207
208 if (NULL == phydev)
209 return -ENODEV;
210 tx_queue = priv->tx_queue[0];
211 rx_queue = priv->rx_queue[0];
212
213 /* etsec-1.7 and older versions have only one txic
214 * and rxic regs although they support multiple queues */
215 cmd->maxtxpkt = get_icft_value(tx_queue->txic);
216 cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
217
218 return phy_ethtool_gset(phydev, cmd);
219}
220
221/* Return the length of the register structure */
222static int gfar_reglen(struct net_device *dev)
223{
224 return sizeof (struct gfar);
225}
226
227/* Return a dump of the GFAR register space */
228static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
229 void *regbuf)
230{
231 int i;
232 struct gfar_private *priv = netdev_priv(dev);
233 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
234 u32 *buf = (u32 *) regbuf;
235
236 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
237 buf[i] = gfar_read(&theregs[i]);
238}
239
240/* Convert microseconds to ethernet clock ticks, which changes
241 * depending on what speed the controller is running at */
242static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
243 unsigned int usecs)
244{
245 unsigned int count;
246
247 /* The timer is different, depending on the interface speed */
248 switch (priv->phydev->speed) {
249 case SPEED_1000:
250 count = GFAR_GBIT_TIME;
251 break;
252 case SPEED_100:
253 count = GFAR_100_TIME;
254 break;
255 case SPEED_10:
256 default:
257 count = GFAR_10_TIME;
258 break;
259 }
260
261 /* Make sure we return a number greater than 0
262 * if usecs > 0 */
263 return (usecs * 1000 + count - 1) / count;
264}
265
266/* Convert ethernet clock ticks to microseconds */
267static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
268 unsigned int ticks)
269{
270 unsigned int count;
271
272 /* The timer is different, depending on the interface speed */
273 switch (priv->phydev->speed) {
274 case SPEED_1000:
275 count = GFAR_GBIT_TIME;
276 break;
277 case SPEED_100:
278 count = GFAR_100_TIME;
279 break;
280 case SPEED_10:
281 default:
282 count = GFAR_10_TIME;
283 break;
284 }
285
286 /* Make sure we return a number greater than 0 */
287 /* if ticks is > 0 */
288 return (ticks * count) / 1000;
289}
290
291/* Get the coalescing parameters, and put them in the cvals
292 * structure. */
293static int gfar_gcoalesce(struct net_device *dev,
294 struct ethtool_coalesce *cvals)
295{
296 struct gfar_private *priv = netdev_priv(dev);
297 struct gfar_priv_rx_q *rx_queue = NULL;
298 struct gfar_priv_tx_q *tx_queue = NULL;
299 unsigned long rxtime;
300 unsigned long rxcount;
301 unsigned long txtime;
302 unsigned long txcount;
303
304 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
305 return -EOPNOTSUPP;
306
307 if (NULL == priv->phydev)
308 return -ENODEV;
309
310 rx_queue = priv->rx_queue[0];
311 tx_queue = priv->tx_queue[0];
312
313 rxtime = get_ictt_value(rx_queue->rxic);
314 rxcount = get_icft_value(rx_queue->rxic);
315 txtime = get_ictt_value(tx_queue->txic);
316 txcount = get_icft_value(tx_queue->txic);
317 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
318 cvals->rx_max_coalesced_frames = rxcount;
319
320 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
321 cvals->tx_max_coalesced_frames = txcount;
322
323 cvals->use_adaptive_rx_coalesce = 0;
324 cvals->use_adaptive_tx_coalesce = 0;
325
326 cvals->pkt_rate_low = 0;
327 cvals->rx_coalesce_usecs_low = 0;
328 cvals->rx_max_coalesced_frames_low = 0;
329 cvals->tx_coalesce_usecs_low = 0;
330 cvals->tx_max_coalesced_frames_low = 0;
331
332 /* When the packet rate is below pkt_rate_high but above
333 * pkt_rate_low (both measured in packets per second) the
334 * normal {rx,tx}_* coalescing parameters are used.
335 */
336
337 /* When the packet rate is (measured in packets per second)
338 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
339 * used.
340 */
341 cvals->pkt_rate_high = 0;
342 cvals->rx_coalesce_usecs_high = 0;
343 cvals->rx_max_coalesced_frames_high = 0;
344 cvals->tx_coalesce_usecs_high = 0;
345 cvals->tx_max_coalesced_frames_high = 0;
346
347 /* How often to do adaptive coalescing packet rate sampling,
348 * measured in seconds. Must not be zero.
349 */
350 cvals->rate_sample_interval = 0;
351
352 return 0;
353}
354
355/* Change the coalescing values.
356 * Both cvals->*_usecs and cvals->*_frames have to be > 0
357 * in order for coalescing to be active
358 */
359static int gfar_scoalesce(struct net_device *dev,
360 struct ethtool_coalesce *cvals)
361{
362 struct gfar_private *priv = netdev_priv(dev);
363 int i, err = 0;
364
365 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
366 return -EOPNOTSUPP;
367
368 if (NULL == priv->phydev)
369 return -ENODEV;
370
371 /* Check the bounds of the values */
372 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
373 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
374 GFAR_MAX_COAL_USECS);
375 return -EINVAL;
376 }
377
378 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
379 netdev_info(dev, "Coalescing is limited to %d frames\n",
380 GFAR_MAX_COAL_FRAMES);
381 return -EINVAL;
382 }
383
384 /* Check the bounds of the values */
385 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
386 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
387 GFAR_MAX_COAL_USECS);
388 return -EINVAL;
389 }
390
391 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
392 netdev_info(dev, "Coalescing is limited to %d frames\n",
393 GFAR_MAX_COAL_FRAMES);
394 return -EINVAL;
395 }
396
397 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
398 cpu_relax();
399
400 /* Set up rx coalescing */
401 if ((cvals->rx_coalesce_usecs == 0) ||
402 (cvals->rx_max_coalesced_frames == 0)) {
403 for (i = 0; i < priv->num_rx_queues; i++)
404 priv->rx_queue[i]->rxcoalescing = 0;
405 } else {
406 for (i = 0; i < priv->num_rx_queues; i++)
407 priv->rx_queue[i]->rxcoalescing = 1;
408 }
409
410 for (i = 0; i < priv->num_rx_queues; i++) {
411 priv->rx_queue[i]->rxic = mk_ic_value(
412 cvals->rx_max_coalesced_frames,
413 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
414 }
415
416 /* Set up tx coalescing */
417 if ((cvals->tx_coalesce_usecs == 0) ||
418 (cvals->tx_max_coalesced_frames == 0)) {
419 for (i = 0; i < priv->num_tx_queues; i++)
420 priv->tx_queue[i]->txcoalescing = 0;
421 } else {
422 for (i = 0; i < priv->num_tx_queues; i++)
423 priv->tx_queue[i]->txcoalescing = 1;
424 }
425
426 for (i = 0; i < priv->num_tx_queues; i++) {
427 priv->tx_queue[i]->txic = mk_ic_value(
428 cvals->tx_max_coalesced_frames,
429 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
430 }
431
432 if (dev->flags & IFF_UP) {
433 stop_gfar(dev);
434 err = startup_gfar(dev);
435 } else {
436 gfar_mac_reset(priv);
437 }
438
439 clear_bit_unlock(GFAR_RESETTING, &priv->state);
440
441 return err;
442}
443
444/* Fills in rvals with the current ring parameters. Currently,
445 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
446 * jumbo are ignored by the driver */
447static void gfar_gringparam(struct net_device *dev,
448 struct ethtool_ringparam *rvals)
449{
450 struct gfar_private *priv = netdev_priv(dev);
451 struct gfar_priv_tx_q *tx_queue = NULL;
452 struct gfar_priv_rx_q *rx_queue = NULL;
453
454 tx_queue = priv->tx_queue[0];
455 rx_queue = priv->rx_queue[0];
456
457 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
458 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
459 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
460 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
461
462 /* Values changeable by the user. The valid values are
463 * in the range 1 to the "*_max_pending" counterpart above.
464 */
465 rvals->rx_pending = rx_queue->rx_ring_size;
466 rvals->rx_mini_pending = rx_queue->rx_ring_size;
467 rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
468 rvals->tx_pending = tx_queue->tx_ring_size;
469}
470
471/* Change the current ring parameters, stopping the controller if
472 * necessary so that we don't mess things up while we're in motion.
473 */
474static int gfar_sringparam(struct net_device *dev,
475 struct ethtool_ringparam *rvals)
476{
477 struct gfar_private *priv = netdev_priv(dev);
478 int err = 0, i;
479
480 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
481 return -EINVAL;
482
483 if (!is_power_of_2(rvals->rx_pending)) {
484 netdev_err(dev, "Ring sizes must be a power of 2\n");
485 return -EINVAL;
486 }
487
488 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
489 return -EINVAL;
490
491 if (!is_power_of_2(rvals->tx_pending)) {
492 netdev_err(dev, "Ring sizes must be a power of 2\n");
493 return -EINVAL;
494 }
495
496 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
497 cpu_relax();
498
499 if (dev->flags & IFF_UP)
500 stop_gfar(dev);
501
502 /* Change the sizes */
503 for (i = 0; i < priv->num_rx_queues; i++)
504 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
505
506 for (i = 0; i < priv->num_tx_queues; i++)
507 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
508
509 /* Rebuild the rings with the new size */
510 if (dev->flags & IFF_UP)
511 err = startup_gfar(dev);
512
513 clear_bit_unlock(GFAR_RESETTING, &priv->state);
514
515 return err;
516}
517
518static void gfar_gpauseparam(struct net_device *dev,
519 struct ethtool_pauseparam *epause)
520{
521 struct gfar_private *priv = netdev_priv(dev);
522
523 epause->autoneg = !!priv->pause_aneg_en;
524 epause->rx_pause = !!priv->rx_pause_en;
525 epause->tx_pause = !!priv->tx_pause_en;
526}
527
528static int gfar_spauseparam(struct net_device *dev,
529 struct ethtool_pauseparam *epause)
530{
531 struct gfar_private *priv = netdev_priv(dev);
532 struct phy_device *phydev = priv->phydev;
533 struct gfar __iomem *regs = priv->gfargrp[0].regs;
534 u32 oldadv, newadv;
535
536 if (!phydev)
537 return -ENODEV;
538
539 if (!(phydev->supported & SUPPORTED_Pause) ||
540 (!(phydev->supported & SUPPORTED_Asym_Pause) &&
541 (epause->rx_pause != epause->tx_pause)))
542 return -EINVAL;
543
544 priv->rx_pause_en = priv->tx_pause_en = 0;
545 if (epause->rx_pause) {
546 priv->rx_pause_en = 1;
547
548 if (epause->tx_pause) {
549 priv->tx_pause_en = 1;
550 /* FLOW_CTRL_RX & TX */
551 newadv = ADVERTISED_Pause;
552 } else /* FLOW_CTLR_RX */
553 newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
554 } else if (epause->tx_pause) {
555 priv->tx_pause_en = 1;
556 /* FLOW_CTLR_TX */
557 newadv = ADVERTISED_Asym_Pause;
558 } else
559 newadv = 0;
560
561 if (epause->autoneg)
562 priv->pause_aneg_en = 1;
563 else
564 priv->pause_aneg_en = 0;
565
566 oldadv = phydev->advertising &
567 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
568 if (oldadv != newadv) {
569 phydev->advertising &=
570 ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
571 phydev->advertising |= newadv;
572 if (phydev->autoneg)
573 /* inform link partner of our
574 * new flow ctrl settings
575 */
576 return phy_start_aneg(phydev);
577
578 if (!epause->autoneg) {
579 u32 tempval;
580 tempval = gfar_read(®s->maccfg1);
581 tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
582 if (priv->tx_pause_en)
583 tempval |= MACCFG1_TX_FLOW;
584 if (priv->rx_pause_en)
585 tempval |= MACCFG1_RX_FLOW;
586 gfar_write(®s->maccfg1, tempval);
587 }
588 }
589
590 return 0;
591}
592
593int gfar_set_features(struct net_device *dev, netdev_features_t features)
594{
595 netdev_features_t changed = dev->features ^ features;
596 struct gfar_private *priv = netdev_priv(dev);
597 int err = 0;
598
599 if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
600 NETIF_F_RXCSUM)))
601 return 0;
602
603 while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
604 cpu_relax();
605
606 dev->features = features;
607
608 if (dev->flags & IFF_UP) {
609 /* Now we take down the rings to rebuild them */
610 stop_gfar(dev);
611 err = startup_gfar(dev);
612 } else {
613 gfar_mac_reset(priv);
614 }
615
616 clear_bit_unlock(GFAR_RESETTING, &priv->state);
617
618 return err;
619}
620
621static uint32_t gfar_get_msglevel(struct net_device *dev)
622{
623 struct gfar_private *priv = netdev_priv(dev);
624
625 return priv->msg_enable;
626}
627
628static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
629{
630 struct gfar_private *priv = netdev_priv(dev);
631
632 priv->msg_enable = data;
633}
634
635#ifdef CONFIG_PM
636static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
637{
638 struct gfar_private *priv = netdev_priv(dev);
639
640 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
641 wol->supported = WAKE_MAGIC;
642 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
643 } else {
644 wol->supported = wol->wolopts = 0;
645 }
646}
647
648static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
649{
650 struct gfar_private *priv = netdev_priv(dev);
651 unsigned long flags;
652
653 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
654 wol->wolopts != 0)
655 return -EINVAL;
656
657 if (wol->wolopts & ~WAKE_MAGIC)
658 return -EINVAL;
659
660 device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
661
662 spin_lock_irqsave(&priv->bflock, flags);
663 priv->wol_en = !!device_may_wakeup(&dev->dev);
664 spin_unlock_irqrestore(&priv->bflock, flags);
665
666 return 0;
667}
668#endif
669
670static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
671{
672 u32 fcr = 0x0, fpr = FPR_FILER_MASK;
673
674 if (ethflow & RXH_L2DA) {
675 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
676 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
677 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
678 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
679 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
680 priv->cur_filer_idx = priv->cur_filer_idx - 1;
681
682 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
683 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
684 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
685 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
686 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
687 priv->cur_filer_idx = priv->cur_filer_idx - 1;
688 }
689
690 if (ethflow & RXH_VLAN) {
691 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
692 RQFCR_AND | RQFCR_HASHTBL_0;
693 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
694 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
695 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
696 priv->cur_filer_idx = priv->cur_filer_idx - 1;
697 }
698
699 if (ethflow & RXH_IP_SRC) {
700 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
701 RQFCR_AND | RQFCR_HASHTBL_0;
702 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
703 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
704 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
705 priv->cur_filer_idx = priv->cur_filer_idx - 1;
706 }
707
708 if (ethflow & (RXH_IP_DST)) {
709 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
710 RQFCR_AND | RQFCR_HASHTBL_0;
711 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
712 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
713 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
714 priv->cur_filer_idx = priv->cur_filer_idx - 1;
715 }
716
717 if (ethflow & RXH_L3_PROTO) {
718 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
719 RQFCR_AND | RQFCR_HASHTBL_0;
720 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
721 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
722 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
723 priv->cur_filer_idx = priv->cur_filer_idx - 1;
724 }
725
726 if (ethflow & RXH_L4_B_0_1) {
727 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
728 RQFCR_AND | RQFCR_HASHTBL_0;
729 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
730 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
731 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
732 priv->cur_filer_idx = priv->cur_filer_idx - 1;
733 }
734
735 if (ethflow & RXH_L4_B_2_3) {
736 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
737 RQFCR_AND | RQFCR_HASHTBL_0;
738 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
739 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
740 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
741 priv->cur_filer_idx = priv->cur_filer_idx - 1;
742 }
743}
744
745static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
746 u64 class)
747{
748 unsigned int last_rule_idx = priv->cur_filer_idx;
749 unsigned int cmp_rqfpr;
750 unsigned int *local_rqfpr;
751 unsigned int *local_rqfcr;
752 int i = 0x0, k = 0x0;
753 int j = MAX_FILER_IDX, l = 0x0;
754 int ret = 1;
755
756 local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
757 GFP_KERNEL);
758 local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
759 GFP_KERNEL);
760 if (!local_rqfpr || !local_rqfcr) {
761 ret = 0;
762 goto err;
763 }
764
765 switch (class) {
766 case TCP_V4_FLOW:
767 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
768 break;
769 case UDP_V4_FLOW:
770 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
771 break;
772 case TCP_V6_FLOW:
773 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
774 break;
775 case UDP_V6_FLOW:
776 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
777 break;
778 default:
779 netdev_err(priv->ndev,
780 "Right now this class is not supported\n");
781 ret = 0;
782 goto err;
783 }
784
785 for (i = 0; i < MAX_FILER_IDX + 1; i++) {
786 local_rqfpr[j] = priv->ftp_rqfpr[i];
787 local_rqfcr[j] = priv->ftp_rqfcr[i];
788 j--;
789 if ((priv->ftp_rqfcr[i] ==
790 (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
791 (priv->ftp_rqfpr[i] == cmp_rqfpr))
792 break;
793 }
794
795 if (i == MAX_FILER_IDX + 1) {
796 netdev_err(priv->ndev,
797 "No parse rule found, can't create hash rules\n");
798 ret = 0;
799 goto err;
800 }
801
802 /* If a match was found, then it begins the starting of a cluster rule
803 * if it was already programmed, we need to overwrite these rules
804 */
805 for (l = i+1; l < MAX_FILER_IDX; l++) {
806 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
807 !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
808 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
809 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
810 priv->ftp_rqfpr[l] = FPR_FILER_MASK;
811 gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
812 priv->ftp_rqfpr[l]);
813 break;
814 }
815
816 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
817 (priv->ftp_rqfcr[l] & RQFCR_AND))
818 continue;
819 else {
820 local_rqfpr[j] = priv->ftp_rqfpr[l];
821 local_rqfcr[j] = priv->ftp_rqfcr[l];
822 j--;
823 }
824 }
825
826 priv->cur_filer_idx = l - 1;
827 last_rule_idx = l;
828
829 /* hash rules */
830 ethflow_to_filer_rules(priv, ethflow);
831
832 /* Write back the popped out rules again */
833 for (k = j+1; k < MAX_FILER_IDX; k++) {
834 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
835 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
836 gfar_write_filer(priv, priv->cur_filer_idx,
837 local_rqfcr[k], local_rqfpr[k]);
838 if (!priv->cur_filer_idx)
839 break;
840 priv->cur_filer_idx = priv->cur_filer_idx - 1;
841 }
842
843err:
844 kfree(local_rqfcr);
845 kfree(local_rqfpr);
846 return ret;
847}
848
849static int gfar_set_hash_opts(struct gfar_private *priv,
850 struct ethtool_rxnfc *cmd)
851{
852 /* write the filer rules here */
853 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
854 return -EINVAL;
855
856 return 0;
857}
858
859static int gfar_check_filer_hardware(struct gfar_private *priv)
860{
861 struct gfar __iomem *regs = priv->gfargrp[0].regs;
862 u32 i;
863
864 /* Check if we are in FIFO mode */
865 i = gfar_read(®s->ecntrl);
866 i &= ECNTRL_FIFM;
867 if (i == ECNTRL_FIFM) {
868 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
869 i = gfar_read(®s->rctrl);
870 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
871 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
872 netdev_info(priv->ndev,
873 "Receive Queue Filtering enabled\n");
874 } else {
875 netdev_warn(priv->ndev,
876 "Receive Queue Filtering disabled\n");
877 return -EOPNOTSUPP;
878 }
879 }
880 /* Or in standard mode */
881 else {
882 i = gfar_read(®s->rctrl);
883 i &= RCTRL_PRSDEP_MASK;
884 if (i == RCTRL_PRSDEP_MASK) {
885 netdev_info(priv->ndev,
886 "Receive Queue Filtering enabled\n");
887 } else {
888 netdev_warn(priv->ndev,
889 "Receive Queue Filtering disabled\n");
890 return -EOPNOTSUPP;
891 }
892 }
893
894 /* Sets the properties for arbitrary filer rule
895 * to the first 4 Layer 4 Bytes
896 */
897 gfar_write(®s->rbifx, 0xC0C1C2C3);
898 return 0;
899}
900
901static int gfar_comp_asc(const void *a, const void *b)
902{
903 return memcmp(a, b, 4);
904}
905
906static int gfar_comp_desc(const void *a, const void *b)
907{
908 return -memcmp(a, b, 4);
909}
910
911static void gfar_swap(void *a, void *b, int size)
912{
913 u32 *_a = a;
914 u32 *_b = b;
915
916 swap(_a[0], _b[0]);
917 swap(_a[1], _b[1]);
918 swap(_a[2], _b[2]);
919 swap(_a[3], _b[3]);
920}
921
922/* Write a mask to filer cache */
923static void gfar_set_mask(u32 mask, struct filer_table *tab)
924{
925 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
926 tab->fe[tab->index].prop = mask;
927 tab->index++;
928}
929
930/* Sets parse bits (e.g. IP or TCP) */
931static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
932{
933 gfar_set_mask(mask, tab);
934 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
935 RQFCR_AND;
936 tab->fe[tab->index].prop = value;
937 tab->index++;
938}
939
940static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
941 struct filer_table *tab)
942{
943 gfar_set_mask(mask, tab);
944 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
945 tab->fe[tab->index].prop = value;
946 tab->index++;
947}
948
949/* For setting a tuple of value and mask of type flag
950 * Example:
951 * IP-Src = 10.0.0.0/255.0.0.0
952 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
953 *
954 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
955 * For a don't care mask it gives us a 0
956 *
957 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
958 * and MAC stuff on an upper level (due to missing information on this level).
959 * For these guys we can discard them if they are value=0 and mask=0.
960 *
961 * Further the all masks are one-padded for better hardware efficiency.
962 */
963static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
964 struct filer_table *tab)
965{
966 switch (flag) {
967 /* 3bit */
968 case RQFCR_PID_PRI:
969 if (!(value | mask))
970 return;
971 mask |= RQFCR_PID_PRI_MASK;
972 break;
973 /* 8bit */
974 case RQFCR_PID_L4P:
975 case RQFCR_PID_TOS:
976 if (!~(mask | RQFCR_PID_L4P_MASK))
977 return;
978 if (!mask)
979 mask = ~0;
980 else
981 mask |= RQFCR_PID_L4P_MASK;
982 break;
983 /* 12bit */
984 case RQFCR_PID_VID:
985 if (!(value | mask))
986 return;
987 mask |= RQFCR_PID_VID_MASK;
988 break;
989 /* 16bit */
990 case RQFCR_PID_DPT:
991 case RQFCR_PID_SPT:
992 case RQFCR_PID_ETY:
993 if (!~(mask | RQFCR_PID_PORT_MASK))
994 return;
995 if (!mask)
996 mask = ~0;
997 else
998 mask |= RQFCR_PID_PORT_MASK;
999 break;
1000 /* 24bit */
1001 case RQFCR_PID_DAH:
1002 case RQFCR_PID_DAL:
1003 case RQFCR_PID_SAH:
1004 case RQFCR_PID_SAL:
1005 if (!(value | mask))
1006 return;
1007 mask |= RQFCR_PID_MAC_MASK;
1008 break;
1009 /* for all real 32bit masks */
1010 default:
1011 if (!~mask)
1012 return;
1013 if (!mask)
1014 mask = ~0;
1015 break;
1016 }
1017 gfar_set_general_attribute(value, mask, flag, tab);
1018}
1019
1020/* Translates value and mask for UDP, TCP or SCTP */
1021static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1022 struct ethtool_tcpip4_spec *mask,
1023 struct filer_table *tab)
1024{
1025 gfar_set_attribute(be32_to_cpu(value->ip4src),
1026 be32_to_cpu(mask->ip4src),
1027 RQFCR_PID_SIA, tab);
1028 gfar_set_attribute(be32_to_cpu(value->ip4dst),
1029 be32_to_cpu(mask->ip4dst),
1030 RQFCR_PID_DIA, tab);
1031 gfar_set_attribute(be16_to_cpu(value->pdst),
1032 be16_to_cpu(mask->pdst),
1033 RQFCR_PID_DPT, tab);
1034 gfar_set_attribute(be16_to_cpu(value->psrc),
1035 be16_to_cpu(mask->psrc),
1036 RQFCR_PID_SPT, tab);
1037 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1038}
1039
1040/* Translates value and mask for RAW-IP4 */
1041static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1042 struct ethtool_usrip4_spec *mask,
1043 struct filer_table *tab)
1044{
1045 gfar_set_attribute(be32_to_cpu(value->ip4src),
1046 be32_to_cpu(mask->ip4src),
1047 RQFCR_PID_SIA, tab);
1048 gfar_set_attribute(be32_to_cpu(value->ip4dst),
1049 be32_to_cpu(mask->ip4dst),
1050 RQFCR_PID_DIA, tab);
1051 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1052 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1053 gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1054 be32_to_cpu(mask->l4_4_bytes),
1055 RQFCR_PID_ARB, tab);
1056
1057}
1058
1059/* Translates value and mask for ETHER spec */
1060static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1061 struct filer_table *tab)
1062{
1063 u32 upper_temp_mask = 0;
1064 u32 lower_temp_mask = 0;
1065
1066 /* Source address */
1067 if (!is_broadcast_ether_addr(mask->h_source)) {
1068 if (is_zero_ether_addr(mask->h_source)) {
1069 upper_temp_mask = 0xFFFFFFFF;
1070 lower_temp_mask = 0xFFFFFFFF;
1071 } else {
1072 upper_temp_mask = mask->h_source[0] << 16 |
1073 mask->h_source[1] << 8 |
1074 mask->h_source[2];
1075 lower_temp_mask = mask->h_source[3] << 16 |
1076 mask->h_source[4] << 8 |
1077 mask->h_source[5];
1078 }
1079 /* Upper 24bit */
1080 gfar_set_attribute(value->h_source[0] << 16 |
1081 value->h_source[1] << 8 |
1082 value->h_source[2],
1083 upper_temp_mask, RQFCR_PID_SAH, tab);
1084 /* And the same for the lower part */
1085 gfar_set_attribute(value->h_source[3] << 16 |
1086 value->h_source[4] << 8 |
1087 value->h_source[5],
1088 lower_temp_mask, RQFCR_PID_SAL, tab);
1089 }
1090 /* Destination address */
1091 if (!is_broadcast_ether_addr(mask->h_dest)) {
1092 /* Special for destination is limited broadcast */
1093 if ((is_broadcast_ether_addr(value->h_dest) &&
1094 is_zero_ether_addr(mask->h_dest))) {
1095 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1096 } else {
1097 if (is_zero_ether_addr(mask->h_dest)) {
1098 upper_temp_mask = 0xFFFFFFFF;
1099 lower_temp_mask = 0xFFFFFFFF;
1100 } else {
1101 upper_temp_mask = mask->h_dest[0] << 16 |
1102 mask->h_dest[1] << 8 |
1103 mask->h_dest[2];
1104 lower_temp_mask = mask->h_dest[3] << 16 |
1105 mask->h_dest[4] << 8 |
1106 mask->h_dest[5];
1107 }
1108
1109 /* Upper 24bit */
1110 gfar_set_attribute(value->h_dest[0] << 16 |
1111 value->h_dest[1] << 8 |
1112 value->h_dest[2],
1113 upper_temp_mask, RQFCR_PID_DAH, tab);
1114 /* And the same for the lower part */
1115 gfar_set_attribute(value->h_dest[3] << 16 |
1116 value->h_dest[4] << 8 |
1117 value->h_dest[5],
1118 lower_temp_mask, RQFCR_PID_DAL, tab);
1119 }
1120 }
1121
1122 gfar_set_attribute(be16_to_cpu(value->h_proto),
1123 be16_to_cpu(mask->h_proto),
1124 RQFCR_PID_ETY, tab);
1125}
1126
1127static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1128{
1129 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1130}
1131
1132static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1133{
1134 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1135}
1136
1137static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1138{
1139 return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1140}
1141
1142static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1143{
1144 return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1145}
1146
1147static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1148{
1149 return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1150 VLAN_PRIO_SHIFT;
1151}
1152
1153static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1154{
1155 return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1156 VLAN_PRIO_SHIFT;
1157}
1158
1159/* Convert a rule to binary filter format of gianfar */
1160static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1161 struct filer_table *tab)
1162{
1163 u32 vlan = 0, vlan_mask = 0;
1164 u32 id = 0, id_mask = 0;
1165 u32 cfi = 0, cfi_mask = 0;
1166 u32 prio = 0, prio_mask = 0;
1167 u32 old_index = tab->index;
1168
1169 /* Check if vlan is wanted */
1170 if ((rule->flow_type & FLOW_EXT) &&
1171 (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1172 if (!rule->m_ext.vlan_tci)
1173 rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1174
1175 vlan = RQFPR_VLN;
1176 vlan_mask = RQFPR_VLN;
1177
1178 /* Separate the fields */
1179 id = vlan_tci_vid(rule);
1180 id_mask = vlan_tci_vidm(rule);
1181 cfi = vlan_tci_cfi(rule);
1182 cfi_mask = vlan_tci_cfim(rule);
1183 prio = vlan_tci_prio(rule);
1184 prio_mask = vlan_tci_priom(rule);
1185
1186 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1187 vlan |= RQFPR_CFI;
1188 vlan_mask |= RQFPR_CFI;
1189 } else if (cfi != VLAN_TAG_PRESENT &&
1190 cfi_mask == VLAN_TAG_PRESENT) {
1191 vlan_mask |= RQFPR_CFI;
1192 }
1193 }
1194
1195 switch (rule->flow_type & ~FLOW_EXT) {
1196 case TCP_V4_FLOW:
1197 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1198 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1199 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1200 &rule->m_u.tcp_ip4_spec, tab);
1201 break;
1202 case UDP_V4_FLOW:
1203 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1204 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1205 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1206 &rule->m_u.udp_ip4_spec, tab);
1207 break;
1208 case SCTP_V4_FLOW:
1209 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1210 tab);
1211 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1212 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1213 (struct ethtool_tcpip4_spec *)&rule->m_u,
1214 tab);
1215 break;
1216 case IP_USER_FLOW:
1217 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1218 tab);
1219 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1220 (struct ethtool_usrip4_spec *) &rule->m_u,
1221 tab);
1222 break;
1223 case ETHER_FLOW:
1224 if (vlan)
1225 gfar_set_parse_bits(vlan, vlan_mask, tab);
1226 gfar_set_ether((struct ethhdr *) &rule->h_u,
1227 (struct ethhdr *) &rule->m_u, tab);
1228 break;
1229 default:
1230 return -1;
1231 }
1232
1233 /* Set the vlan attributes in the end */
1234 if (vlan) {
1235 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1236 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1237 }
1238
1239 /* If there has been nothing written till now, it must be a default */
1240 if (tab->index == old_index) {
1241 gfar_set_mask(0xFFFFFFFF, tab);
1242 tab->fe[tab->index].ctrl = 0x20;
1243 tab->fe[tab->index].prop = 0x0;
1244 tab->index++;
1245 }
1246
1247 /* Remove last AND */
1248 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1249
1250 /* Specify which queue to use or to drop */
1251 if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1252 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1253 else
1254 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1255
1256 /* Only big enough entries can be clustered */
1257 if (tab->index > (old_index + 2)) {
1258 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1259 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1260 }
1261
1262 /* In rare cases the cache can be full while there is
1263 * free space in hw
1264 */
1265 if (tab->index > MAX_FILER_CACHE_IDX - 1)
1266 return -EBUSY;
1267
1268 return 0;
1269}
1270
1271/* Copy size filer entries */
1272static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1273 struct gfar_filer_entry src[0], s32 size)
1274{
1275 while (size > 0) {
1276 size--;
1277 dst[size].ctrl = src[size].ctrl;
1278 dst[size].prop = src[size].prop;
1279 }
1280}
1281
1282/* Delete the contents of the filer-table between start and end
1283 * and collapse them
1284 */
1285static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1286{
1287 int length;
1288
1289 if (end > MAX_FILER_CACHE_IDX || end < begin)
1290 return -EINVAL;
1291
1292 end++;
1293 length = end - begin;
1294
1295 /* Copy */
1296 while (end < tab->index) {
1297 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1298 tab->fe[begin++].prop = tab->fe[end++].prop;
1299
1300 }
1301 /* Fill up with don't cares */
1302 while (begin < tab->index) {
1303 tab->fe[begin].ctrl = 0x60;
1304 tab->fe[begin].prop = 0xFFFFFFFF;
1305 begin++;
1306 }
1307
1308 tab->index -= length;
1309 return 0;
1310}
1311
1312/* Make space on the wanted location */
1313static int gfar_expand_filer_entries(u32 begin, u32 length,
1314 struct filer_table *tab)
1315{
1316 if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1317 begin > MAX_FILER_CACHE_IDX)
1318 return -EINVAL;
1319
1320 gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1321 tab->index - length + 1);
1322
1323 tab->index += length;
1324 return 0;
1325}
1326
1327static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1328{
1329 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1330 start++) {
1331 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1332 (RQFCR_AND | RQFCR_CLE))
1333 return start;
1334 }
1335 return -1;
1336}
1337
1338static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1339{
1340 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1341 start++) {
1342 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1343 (RQFCR_CLE))
1344 return start;
1345 }
1346 return -1;
1347}
1348
1349/* Uses hardwares clustering option to reduce
1350 * the number of filer table entries
1351 */
1352static void gfar_cluster_filer(struct filer_table *tab)
1353{
1354 s32 i = -1, j, iend, jend;
1355
1356 while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1357 j = i;
1358 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1359 /* The cluster entries self and the previous one
1360 * (a mask) must be identical!
1361 */
1362 if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1363 break;
1364 if (tab->fe[i].prop != tab->fe[j].prop)
1365 break;
1366 if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1367 break;
1368 if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1369 break;
1370 iend = gfar_get_next_cluster_end(i, tab);
1371 jend = gfar_get_next_cluster_end(j, tab);
1372 if (jend == -1 || iend == -1)
1373 break;
1374
1375 /* First we make some free space, where our cluster
1376 * element should be. Then we copy it there and finally
1377 * delete in from its old location.
1378 */
1379 if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1380 -EINVAL)
1381 break;
1382
1383 gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1384 &(tab->fe[jend + 1]), jend - j);
1385
1386 if (gfar_trim_filer_entries(jend - 1,
1387 jend + (jend - j),
1388 tab) == -EINVAL)
1389 return;
1390
1391 /* Mask out cluster bit */
1392 tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1393 }
1394 }
1395}
1396
1397/* Swaps the masked bits of a1<>a2 and b1<>b2 */
1398static void gfar_swap_bits(struct gfar_filer_entry *a1,
1399 struct gfar_filer_entry *a2,
1400 struct gfar_filer_entry *b1,
1401 struct gfar_filer_entry *b2, u32 mask)
1402{
1403 u32 temp[4];
1404 temp[0] = a1->ctrl & mask;
1405 temp[1] = a2->ctrl & mask;
1406 temp[2] = b1->ctrl & mask;
1407 temp[3] = b2->ctrl & mask;
1408
1409 a1->ctrl &= ~mask;
1410 a2->ctrl &= ~mask;
1411 b1->ctrl &= ~mask;
1412 b2->ctrl &= ~mask;
1413
1414 a1->ctrl |= temp[1];
1415 a2->ctrl |= temp[0];
1416 b1->ctrl |= temp[3];
1417 b2->ctrl |= temp[2];
1418}
1419
1420/* Generate a list consisting of masks values with their start and
1421 * end of validity and block as indicator for parts belonging
1422 * together (glued by ANDs) in mask_table
1423 */
1424static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1425 struct filer_table *tab)
1426{
1427 u32 i, and_index = 0, block_index = 1;
1428
1429 for (i = 0; i < tab->index; i++) {
1430
1431 /* LSByte of control = 0 sets a mask */
1432 if (!(tab->fe[i].ctrl & 0xF)) {
1433 mask_table[and_index].mask = tab->fe[i].prop;
1434 mask_table[and_index].start = i;
1435 mask_table[and_index].block = block_index;
1436 if (and_index >= 1)
1437 mask_table[and_index - 1].end = i - 1;
1438 and_index++;
1439 }
1440 /* cluster starts and ends will be separated because they should
1441 * hold their position
1442 */
1443 if (tab->fe[i].ctrl & RQFCR_CLE)
1444 block_index++;
1445 /* A not set AND indicates the end of a depended block */
1446 if (!(tab->fe[i].ctrl & RQFCR_AND))
1447 block_index++;
1448 }
1449
1450 mask_table[and_index - 1].end = i - 1;
1451
1452 return and_index;
1453}
1454
1455/* Sorts the entries of mask_table by the values of the masks.
1456 * Important: The 0xFF80 flags of the first and last entry of a
1457 * block must hold their position (which queue, CLusterEnable, ReJEct,
1458 * AND)
1459 */
1460static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1461 struct filer_table *temp_table, u32 and_index)
1462{
1463 /* Pointer to compare function (_asc or _desc) */
1464 int (*gfar_comp)(const void *, const void *);
1465
1466 u32 i, size = 0, start = 0, prev = 1;
1467 u32 old_first, old_last, new_first, new_last;
1468
1469 gfar_comp = &gfar_comp_desc;
1470
1471 for (i = 0; i < and_index; i++) {
1472 if (prev != mask_table[i].block) {
1473 old_first = mask_table[start].start + 1;
1474 old_last = mask_table[i - 1].end;
1475 sort(mask_table + start, size,
1476 sizeof(struct gfar_mask_entry),
1477 gfar_comp, &gfar_swap);
1478
1479 /* Toggle order for every block. This makes the
1480 * thing more efficient!
1481 */
1482 if (gfar_comp == gfar_comp_desc)
1483 gfar_comp = &gfar_comp_asc;
1484 else
1485 gfar_comp = &gfar_comp_desc;
1486
1487 new_first = mask_table[start].start + 1;
1488 new_last = mask_table[i - 1].end;
1489
1490 gfar_swap_bits(&temp_table->fe[new_first],
1491 &temp_table->fe[old_first],
1492 &temp_table->fe[new_last],
1493 &temp_table->fe[old_last],
1494 RQFCR_QUEUE | RQFCR_CLE |
1495 RQFCR_RJE | RQFCR_AND);
1496
1497 start = i;
1498 size = 0;
1499 }
1500 size++;
1501 prev = mask_table[i].block;
1502 }
1503}
1504
1505/* Reduces the number of masks needed in the filer table to save entries
1506 * This is done by sorting the masks of a depended block. A depended block is
1507 * identified by gluing ANDs or CLE. The sorting order toggles after every
1508 * block. Of course entries in scope of a mask must change their location with
1509 * it.
1510 */
1511static int gfar_optimize_filer_masks(struct filer_table *tab)
1512{
1513 struct filer_table *temp_table;
1514 struct gfar_mask_entry *mask_table;
1515
1516 u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1517 s32 ret = 0;
1518
1519 /* We need a copy of the filer table because
1520 * we want to change its order
1521 */
1522 temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1523 if (temp_table == NULL)
1524 return -ENOMEM;
1525
1526 mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1527 sizeof(struct gfar_mask_entry), GFP_KERNEL);
1528
1529 if (mask_table == NULL) {
1530 ret = -ENOMEM;
1531 goto end;
1532 }
1533
1534 and_index = gfar_generate_mask_table(mask_table, tab);
1535
1536 gfar_sort_mask_table(mask_table, temp_table, and_index);
1537
1538 /* Now we can copy the data from our duplicated filer table to
1539 * the real one in the order the mask table says
1540 */
1541 for (i = 0; i < and_index; i++) {
1542 size = mask_table[i].end - mask_table[i].start + 1;
1543 gfar_copy_filer_entries(&(tab->fe[j]),
1544 &(temp_table->fe[mask_table[i].start]), size);
1545 j += size;
1546 }
1547
1548 /* And finally we just have to check for duplicated masks and drop the
1549 * second ones
1550 */
1551 for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1552 if (tab->fe[i].ctrl == 0x80) {
1553 previous_mask = i++;
1554 break;
1555 }
1556 }
1557 for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1558 if (tab->fe[i].ctrl == 0x80) {
1559 if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1560 /* Two identical ones found!
1561 * So drop the second one!
1562 */
1563 gfar_trim_filer_entries(i, i, tab);
1564 } else
1565 /* Not identical! */
1566 previous_mask = i;
1567 }
1568 }
1569
1570 kfree(mask_table);
1571end: kfree(temp_table);
1572 return ret;
1573}
1574
1575/* Write the bit-pattern from software's buffer to hardware registers */
1576static int gfar_write_filer_table(struct gfar_private *priv,
1577 struct filer_table *tab)
1578{
1579 u32 i = 0;
1580 if (tab->index > MAX_FILER_IDX - 1)
1581 return -EBUSY;
1582
1583 /* Fill regular entries */
1584 for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
1585 i++)
1586 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1587 /* Fill the rest with fall-troughs */
1588 for (; i < MAX_FILER_IDX - 1; i++)
1589 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1590 /* Last entry must be default accept
1591 * because that's what people expect
1592 */
1593 gfar_write_filer(priv, i, 0x20, 0x0);
1594
1595 return 0;
1596}
1597
1598static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1599 struct gfar_private *priv)
1600{
1601
1602 if (flow->flow_type & FLOW_EXT) {
1603 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1604 netdev_warn(priv->ndev,
1605 "User-specific data not supported!\n");
1606 if (~flow->m_ext.vlan_etype)
1607 netdev_warn(priv->ndev,
1608 "VLAN-etype not supported!\n");
1609 }
1610 if (flow->flow_type == IP_USER_FLOW)
1611 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1612 netdev_warn(priv->ndev,
1613 "IP-Version differing from IPv4 not supported!\n");
1614
1615 return 0;
1616}
1617
1618static int gfar_process_filer_changes(struct gfar_private *priv)
1619{
1620 struct ethtool_flow_spec_container *j;
1621 struct filer_table *tab;
1622 s32 i = 0;
1623 s32 ret = 0;
1624
1625 /* So index is set to zero, too! */
1626 tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1627 if (tab == NULL)
1628 return -ENOMEM;
1629
1630 /* Now convert the existing filer data from flow_spec into
1631 * filer tables binary format
1632 */
1633 list_for_each_entry(j, &priv->rx_list.list, list) {
1634 ret = gfar_convert_to_filer(&j->fs, tab);
1635 if (ret == -EBUSY) {
1636 netdev_err(priv->ndev,
1637 "Rule not added: No free space!\n");
1638 goto end;
1639 }
1640 if (ret == -1) {
1641 netdev_err(priv->ndev,
1642 "Rule not added: Unsupported Flow-type!\n");
1643 goto end;
1644 }
1645 }
1646
1647 i = tab->index;
1648
1649 /* Optimizations to save entries */
1650 gfar_cluster_filer(tab);
1651 gfar_optimize_filer_masks(tab);
1652
1653 pr_debug("\tSummary:\n"
1654 "\tData on hardware: %d\n"
1655 "\tCompression rate: %d%%\n",
1656 tab->index, 100 - (100 * tab->index) / i);
1657
1658 /* Write everything to hardware */
1659 ret = gfar_write_filer_table(priv, tab);
1660 if (ret == -EBUSY) {
1661 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1662 goto end;
1663 }
1664
1665end:
1666 kfree(tab);
1667 return ret;
1668}
1669
1670static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1671{
1672 u32 i = 0;
1673
1674 for (i = 0; i < sizeof(flow->m_u); i++)
1675 flow->m_u.hdata[i] ^= 0xFF;
1676
1677 flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1678 flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1679 flow->m_ext.data[0] ^= cpu_to_be32(~0);
1680 flow->m_ext.data[1] ^= cpu_to_be32(~0);
1681}
1682
1683static int gfar_add_cls(struct gfar_private *priv,
1684 struct ethtool_rx_flow_spec *flow)
1685{
1686 struct ethtool_flow_spec_container *temp, *comp;
1687 int ret = 0;
1688
1689 temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1690 if (temp == NULL)
1691 return -ENOMEM;
1692 memcpy(&temp->fs, flow, sizeof(temp->fs));
1693
1694 gfar_invert_masks(&temp->fs);
1695 ret = gfar_check_capability(&temp->fs, priv);
1696 if (ret)
1697 goto clean_mem;
1698 /* Link in the new element at the right @location */
1699 if (list_empty(&priv->rx_list.list)) {
1700 ret = gfar_check_filer_hardware(priv);
1701 if (ret != 0)
1702 goto clean_mem;
1703 list_add(&temp->list, &priv->rx_list.list);
1704 goto process;
1705 } else {
1706 list_for_each_entry(comp, &priv->rx_list.list, list) {
1707 if (comp->fs.location > flow->location) {
1708 list_add_tail(&temp->list, &comp->list);
1709 goto process;
1710 }
1711 if (comp->fs.location == flow->location) {
1712 netdev_err(priv->ndev,
1713 "Rule not added: ID %d not free!\n",
1714 flow->location);
1715 ret = -EBUSY;
1716 goto clean_mem;
1717 }
1718 }
1719 list_add_tail(&temp->list, &priv->rx_list.list);
1720 }
1721
1722process:
1723 ret = gfar_process_filer_changes(priv);
1724 if (ret)
1725 goto clean_list;
1726 priv->rx_list.count++;
1727 return ret;
1728
1729clean_list:
1730 list_del(&temp->list);
1731clean_mem:
1732 kfree(temp);
1733 return ret;
1734}
1735
1736static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1737{
1738 struct ethtool_flow_spec_container *comp;
1739 u32 ret = -EINVAL;
1740
1741 if (list_empty(&priv->rx_list.list))
1742 return ret;
1743
1744 list_for_each_entry(comp, &priv->rx_list.list, list) {
1745 if (comp->fs.location == loc) {
1746 list_del(&comp->list);
1747 kfree(comp);
1748 priv->rx_list.count--;
1749 gfar_process_filer_changes(priv);
1750 ret = 0;
1751 break;
1752 }
1753 }
1754
1755 return ret;
1756}
1757
1758static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1759{
1760 struct ethtool_flow_spec_container *comp;
1761 u32 ret = -EINVAL;
1762
1763 list_for_each_entry(comp, &priv->rx_list.list, list) {
1764 if (comp->fs.location == cmd->fs.location) {
1765 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1766 gfar_invert_masks(&cmd->fs);
1767 ret = 0;
1768 break;
1769 }
1770 }
1771
1772 return ret;
1773}
1774
1775static int gfar_get_cls_all(struct gfar_private *priv,
1776 struct ethtool_rxnfc *cmd, u32 *rule_locs)
1777{
1778 struct ethtool_flow_spec_container *comp;
1779 u32 i = 0;
1780
1781 list_for_each_entry(comp, &priv->rx_list.list, list) {
1782 if (i == cmd->rule_cnt)
1783 return -EMSGSIZE;
1784 rule_locs[i] = comp->fs.location;
1785 i++;
1786 }
1787
1788 cmd->data = MAX_FILER_IDX;
1789 cmd->rule_cnt = i;
1790
1791 return 0;
1792}
1793
1794static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1795{
1796 struct gfar_private *priv = netdev_priv(dev);
1797 int ret = 0;
1798
1799 if (test_bit(GFAR_RESETTING, &priv->state))
1800 return -EBUSY;
1801
1802 mutex_lock(&priv->rx_queue_access);
1803
1804 switch (cmd->cmd) {
1805 case ETHTOOL_SRXFH:
1806 ret = gfar_set_hash_opts(priv, cmd);
1807 break;
1808 case ETHTOOL_SRXCLSRLINS:
1809 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1810 cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1811 cmd->fs.location >= MAX_FILER_IDX) {
1812 ret = -EINVAL;
1813 break;
1814 }
1815 ret = gfar_add_cls(priv, &cmd->fs);
1816 break;
1817 case ETHTOOL_SRXCLSRLDEL:
1818 ret = gfar_del_cls(priv, cmd->fs.location);
1819 break;
1820 default:
1821 ret = -EINVAL;
1822 }
1823
1824 mutex_unlock(&priv->rx_queue_access);
1825
1826 return ret;
1827}
1828
1829static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1830 u32 *rule_locs)
1831{
1832 struct gfar_private *priv = netdev_priv(dev);
1833 int ret = 0;
1834
1835 switch (cmd->cmd) {
1836 case ETHTOOL_GRXRINGS:
1837 cmd->data = priv->num_rx_queues;
1838 break;
1839 case ETHTOOL_GRXCLSRLCNT:
1840 cmd->rule_cnt = priv->rx_list.count;
1841 break;
1842 case ETHTOOL_GRXCLSRULE:
1843 ret = gfar_get_cls(priv, cmd);
1844 break;
1845 case ETHTOOL_GRXCLSRLALL:
1846 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1847 break;
1848 default:
1849 ret = -EINVAL;
1850 break;
1851 }
1852
1853 return ret;
1854}
1855
1856int gfar_phc_index = -1;
1857EXPORT_SYMBOL(gfar_phc_index);
1858
1859static int gfar_get_ts_info(struct net_device *dev,
1860 struct ethtool_ts_info *info)
1861{
1862 struct gfar_private *priv = netdev_priv(dev);
1863
1864 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1865 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1866 SOF_TIMESTAMPING_SOFTWARE;
1867 info->phc_index = -1;
1868 return 0;
1869 }
1870 info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1871 SOF_TIMESTAMPING_RX_HARDWARE |
1872 SOF_TIMESTAMPING_RAW_HARDWARE;
1873 info->phc_index = gfar_phc_index;
1874 info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1875 (1 << HWTSTAMP_TX_ON);
1876 info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1877 (1 << HWTSTAMP_FILTER_ALL);
1878 return 0;
1879}
1880
1881const struct ethtool_ops gfar_ethtool_ops = {
1882 .get_settings = gfar_gsettings,
1883 .set_settings = gfar_ssettings,
1884 .get_drvinfo = gfar_gdrvinfo,
1885 .get_regs_len = gfar_reglen,
1886 .get_regs = gfar_get_regs,
1887 .get_link = ethtool_op_get_link,
1888 .get_coalesce = gfar_gcoalesce,
1889 .set_coalesce = gfar_scoalesce,
1890 .get_ringparam = gfar_gringparam,
1891 .set_ringparam = gfar_sringparam,
1892 .get_pauseparam = gfar_gpauseparam,
1893 .set_pauseparam = gfar_spauseparam,
1894 .get_strings = gfar_gstrings,
1895 .get_sset_count = gfar_sset_count,
1896 .get_ethtool_stats = gfar_fill_stats,
1897 .get_msglevel = gfar_get_msglevel,
1898 .set_msglevel = gfar_set_msglevel,
1899#ifdef CONFIG_PM
1900 .get_wol = gfar_get_wol,
1901 .set_wol = gfar_set_wol,
1902#endif
1903 .set_rxnfc = gfar_set_nfc,
1904 .get_rxnfc = gfar_get_nfc,
1905 .get_ts_info = gfar_get_ts_info,
1906};